feat: enable build on ubuntu 20.04

Author: art049

.github/workflows/release.yml

@@ -7,7 +7,12 @@ on:
 
 jobs:
   build-package:
-    runs-on: ubuntu-22.04
+    strategy:
+      matrix:
+        os:
+          - ubuntu-20.04
+          - ubuntu-22.04
+    runs-on: ${{ matrix.os }}
     steps:
       - uses: actions/checkout@v3
       - name: Update apt-get cache
@@ -35,4 +40,4 @@ jobs:
           upload_url: ${{ github.event.release.upload_url }}
           asset_content_type: application/vnd.debian.binary-package
           asset_path: ${{ steps.build_deb.outputs.asset-path }}
-          asset_name: valgrind_${{ github.event.release.name }}_amd64.deb
+          asset_name: valgrind_${{ github.event.release.name }}_${{ matrix.os }}_amd64.deb

debian/control

@@ -3,7 +3,7 @@ Section: devel
 Priority: optional
 Maintainer: Ubuntu Developers <ubuntu-devel-discuss@lists.ubuntu.com>
 XSBC-Original-Maintainer: Alessandro Ghedini <ghedo@debian.org>
-Build-Depends: debhelper-compat (= 13),
+Build-Depends: debhelper-compat(= 12),
  gdb,
  gcc-multilib [amd64],
  libc6-dev-i386 [amd64],